Washington (AFP) - The World Health Organization has reported the largest single-day increase in coronavirus cases, as US President Donald Trump proposed hosting world leaders for the annual G7 summit as a sign of "normalization."The WHO said Wednesday that more than 106,000 virus cases had been reported -- the most in a single day since the outbreak erupted in the Chinese city of Wuhan in December.The UN body's chief, Tedros Adhanom Ghebreyesus said he was "very concerned" about the situation in low- and middle-income nations.Latin America has seen infections surge in recent days and, in some...